IMPROVED CIRCUIT FLEXIBILITY USING LASER THINNING
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-23
Flexible circuits are intended for use in applica- tions where space is at a premium and bending is required. Copper on the outer surface of a bend experience considerable tension (Figure I) and can crack when the distance to the bending neutral axis is too great (i.e. the substrate is too thick).